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The recent weathering of uraninite from the Červená vein, Jáchymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association
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SYSNO ASEP 0434734 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The recent weathering of uraninite from the Červená vein, Jáchymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association Author(s) Plášil, Jakub (FZU-D) RID, ORCID
Sejkora, J. (CZ)
Škoda, R. (CZ)
Škácha, P. (CZ)Source Title Journal of Geosciences. - : Česká geologická společnost - ISSN 1802-6222
Roč. 59, č. 3 (2014), s. 223-253Number of pages 31 s. Publication form Print - P Language eng - English Country CZ - Czech Republic Keywords uraninite ; supergene weathering ; acid-mine drainage ; mineral data ; X-ray diffraction ; bond-valence approach Subject RIV DB - Geology ; Mineralogy R&D Projects GP13-31276P GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000341694500004 EID SCOPUS 84904256941 DOI https://doi.org/10.3190/jgeosci.171 Annotation Uraninite and the supergene minerals from the Červená hydrothermal uranium vein (Jáchymov ore district, Czech Republic) were studied. These supergene minerals represent alteration products of the joint weathering of uraninite and hypogene sulfide minerals, connected to the acid-mine drainage systems. The weathering system is characterized by the high activity of Cu and REE, which control the composition of the resulting supergene minerals: commonly occurring are Cu-dominant uranyl sulfates of the zippeite group, Cu-dominant uranyl silicates or Y- and REE-containing uranyl-sulfates. The high ac tivity of Cu and REE is also reflected by the fact that both elements enter minerals, which are nominally Cu- or REE-free. The alteration association was evaluated using the bond-valence approach, documenting distinct evolutionary trends during weathering. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2015
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